Global patent index - EP 1017871 A1

EP 1017871 A1 2000-07-12 - MULTILAYERED COATED CUTTING TOOL

Title (en)

MULTILAYERED COATED CUTTING TOOL

Title (de)

MIT MEHREREN SCHICHTEN BESCHICHTETES SCHNEIDWERKZEUG

Title (fr)

OUTIL DE COUPE A REVETEMENT MULTICOUCHE

Publication

EP 1017871 A1 (EN)

Application

EP 98921929 A

Priority

  • SE 9800564 W
  • SE 9701181 A

Abstract (en)

[origin: WO9844163A1] The present invention relates to a cutting tool comprising a body (1) of sintered cemented carbide or cermet, ceramic or high speed steel on which at least on the functioning parts of the surface of the body, a thin, adherent, hard and wear resistant coating (2) is applied. The coating comprises a laminar, multilayered structure of refractory compounds in polycrystalline, repetitive form, (MX/NX) lambda /(MX/NX) lambda /MX/NX) lambda /(MX/NX) lambda /... where the alternating layers MX (3) and NX (4) are composed of metalnitrides or carbides with the metal element selected from Ti, Nb, Hf, V, Ta, Mo, Zr, Cr and W. The repeat period lambda (5) is essentially constant throughout the entire multilayered structure, and larger than 3 nm but smaller than 100 nm, preferably smaller than 25 nm. The total thickness of said multilayered coating is larger than 0.5 mu m but smaller than 20 mu m.

IPC 1-7 (main, further and additional classification)

C23C 14/06; B23B 27/14; C23C 30/00

IPC 8 full level (invention and additional information)

B23B 27/14 (2006.01); C23C 14/06 (2006.01); C23C 28/04 (2006.01); C23C 30/00 (2006.01)

CPC (invention and additional information)

C23C 28/044 (2013.01); C23C 14/0641 (2013.01); C23C 28/42 (2013.01); C23C 30/005 (2013.01)

Citation (search report)

See references of WO 9844163A1

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

EPO simple patent family

WO 9844163 A1 19981008; EP 1017871 A1 20000712; JP 2001517156 A 20011002; SE 9701181 D0 19970327

INPADOC legal status

2003-01-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020626

2002-04-03 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020215

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990826

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE FR GB IT LI SE